Improvement in rotary churns



' rrnn STATES PATENT ()FFIon.

ISRAEL SOLT, OF LI'IHOPOLIS, OHIO.

IMPROVEMENT IN ROTARY CHURNS.

Specification forming part of Letters Patent No. I 74,744, dated March 14, 1876 application filed November 13, 1875.

To all whom it may concern:

Be it known that I, ISRAEL SOLT, of Lithopolis, in the county of Fairfi'eld and State of of labor, and which shall be simple in construction and convenient in use.

The invention consists in using with a square churn a dasher having its blades straight on outer edges, concave on inner edges, and provided with concavo-convex slots, the same being applied to cross-bars, as hereinafter described.

A is the body of the churn, which is made rectangular in form, and of any desired size. B is the cover, which is hinged at one edge to the upper edge of one side of the churn-body A. To the side of the churn-body A to which the cover B is hinged is attached an upright, O, of such a height as to receive and support the cover B when turned up into a vertical position to give access to the interior of the churn. The cover B is secured in place when closed by buttons D, pivoted to the edge of the churn-body A, and which are turned over the free edge of the said cover B. E F are two brackets, which are attached to the cover B, the one E directly over the center of said cover and parallel with its hinged edge, and the other F parallel with it and between it and the said hinged edge of the cover. In bearings in the upper parts of the brackets E F work the journals of a short shaft, G, to which is attached a large bevel-gear wheel, H. To the gear-wheel H is rigidly attached a lever, I, to serveas a handle for operating the churn.

The teeth of the gear-wheel H mesh into the teeth of a smaller bevel-gear wheel, J, rigidly attached to a short vertical shaft, K, that passes down through a hole in the center of the cover B, and the upper end of which revolves in a socket in the lower end of a downwardlyprojecting arm, 0, of the bracket E. To the lower end of the shaft K, just below the cover B, are attached. the centers of two bars, L, that cross each other at right angles, and to the outer parts of which are attached the upper ends of the dasher blades or paddles M. The outer edges of the blades M are straight, and their inner edges are concaved. In the blades M are formed concavo-convex slots m. With this construction, by moving the lever I back and forth a reciprocating rotary motion will be given to the dasher L M, which will tend to form rotary currents in the milk, and will then' suddenly break them up and form currents in the opposite direction, to be broken up in turn, thus throwing the milk into violent agitation and bringing the butter in a very short time.

I am aware that a dasher made straight on the outer and inner surface, or one concave on outer and straight on inner surface, is not new, but, having experimented in the same churn and at the same temperature with both of these constructions and my own, I found that the first mentioned made butter from six gallons of cream in thirty-eight minutes, the next mentioned in twenty-seven minutes, and mine in ten minutes. The first carries the cream around with it, and does not break the globules, so that it requires more than half an hour; the second carries round a great portion of the cream, but a large part passes through its convex'slots; mine, by its inner concave and outer straight edge, catches all the cream and throws it to the center of churn, so that the butter-globules are forced back and forth through the slots and quickly broken.

Having thus described all that is necessary to a full understanding of my invention, what 1 claim is-- A churn-dasher, constructed with blades M, straight on the outer edges, concavcd on the inner ones, and provided with slots m, concaved toward the inside, as and for the purpose specified.

J NO. BLAGKWOOD, JOHN MoNHA'rT. 

